Didnt know where to post this ? Have a 88 xj was wondering with the vent windows in the front drivers and passenger. I have the ones that swivel out to get more air in can you replace with stationary one that dont move ?  

i couldn't tell ya. why not just leave them closed?  

ones broken and the other leaks into the door !  

i see. click this link   http://www.4wd.com/search.aspx?PN=1&word=windows.   that's for cj's and wranglers. i'm not sure if it'll work on yours. their # is  1-800-555-3353 8am-9pm mon-fri  9am-5pm sat. i couldn't find a link for you jeep, but they do carry items, just not sure if they have the vent windows you're looking for.  

if you didn't do this already, a decent temp fix is to use clear rtv silicone sealant around to edges and in any gaps. when you go to remove it, all ya gotta do is use a razor knife to cut away the silicone.